Guard for controller-brushes.



No., 656,372. Patented Aug. 2|, |900.

A..` L.. REKER.

GUARD FOR*l GD-NTRQLLER BRUSHES.

(Application led. Jam.. 8, 1900.)

(No Model.)

UNITED STATESv PATENT ,OFFICE ANDREW L. RIKER, OF NEV YORK, N. Y.

GUARD FOR CONTROLLER-BRUSHES.

SPECIFICATION forming part of Letters Patent No. 656,372, dated August21, 1900..

Application led January 8,1900. Serial No. 760. (Nomodel.)

To all whom, it may concern:

Be it known that I, ANDREW L. RIKER, a citizen of the United States, anda resident of the city of New York, State of'New York,have invented anew and useful Guard for Controller-Brushes, which is fully set forth inthe following specification.

The present invention is a guard for controller-brushes; and it consistsin the employment of a device to prevent the controllerbrushes fromcatching upon the controllersegments.

In the drawings annexed hereto as lpart of this application, Figure 1 isan end elevation showing one form of guard in position, and Fig. 2 is aside elevation of a number of controller segments and brushes with theguards for the latter.

In ordinary devices of this kind there is a tendency when thecontroller-brush is vibrating back and forth for its upper end to becomecaught by the toe of an approaching segment. This produces a shock andis liable L0 break the brush, always wearing and fraying its upper end.By my construction, however, while the brush is otherwise free to movethe new guard keeps it from iiying too far into the path of itsapproaching controller segment.

Referring to the drawings, A is the main body or axis of acontroller-barrel, carrying the' segments B B on the staggered arms band mounted in the frame C, all as usual.

D represents the controllerbrush, secured by bolts d', as shown and bentor curved at D to conform to its controller-segment. It is prolonged atd somewhat farther than has heretofore been customary.

E represents one form of guard, consisting of a plate or metal piecesecured in any convenient manner, preferably adjustably, and by the samebolts d that hold its brush D.

It lies sufficiently back of its brush D not to interfere with themovement of the latter and passing over the top of the brush presentsthe depending lip e in front of the upper portion d of the latter. Thislip eis so situated relatively that while it does not hold brush D outof its normal position for contact with its segment B nor otherwiseinterfere with its motion it keeps it from going too far into the pathof the approaching segment.

I do not limit myself to the exact form of guard shown nor to theparticular manner of mounting it, for the spirit of my inventionconsists in providing a device that will keep the controller-brush frombeing caught by its controller-segment without otherwise interferingwith it.

Having thus described my invention, I claiml. The combination with acontroller-brush and its controller-segment, of a guard for the formerthat keeps it from interfering with the latter, substantially asdescribed.

2. The combination with a controller-brush and a controller-segment, ofa guard suitably held in front of the upper portion of the former toprevent it from flying into the path of the latter, substantially asdescribed.

3. The combination with a controller-brush and a controller-segment, ofa guard for the former consisting of a plate extending behind said brushand presenting a depending lip in front of the upper portion thereof,whereby said brush is kept from interfering with said segment,substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ANDREW L. BIKER.

Witnesses:

ELIsHA K. CAMP, C. A. L. MAssin.

